化简:sin(a-π)cot(a-2π)/cos(a-π)tan(a-2π)

来源：学生作业帮助网编辑：六六作业网时间：2024/10/03 02:40:21

化简:sin(a-π)cot(a-2π)/cos(a-π)tan(a-2π)化简:sin(a-π)cot(a-2π)/cos(a-π)tan(a-2π)化简:sin(a-π)cot(a-2π)/cos

化简:sin(a-π)cot(a-2π)/cos(a-π)tan(a-2π)
化简:sin(a-π)cot(a-2π)/cos(a-π)tan(a-2π)

化简:sin(a-π)cot(a-2π)/cos(a-π)tan(a-2π)
=-sina*cota/-cosa*tana
=-sina*cota/-sina
=cota